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equal.go
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equal.go
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package macros
import (
. "github.com/kocircuit/kocircuit/lang/circuit/eval"
. "github.com/kocircuit/kocircuit/lang/circuit/model"
. "github.com/kocircuit/kocircuit/lang/go/eval"
. "github.com/kocircuit/kocircuit/lang/go/eval/symbol"
. "github.com/kocircuit/kocircuit/lang/go/kit/util"
)
func init() {
RegisterEvalMacro("Equal", new(EvalEqualMacro))
}
type EvalEqualMacro struct{}
func (m EvalEqualMacro) MacroID() string { return m.Help() }
func (m EvalEqualMacro) Label() string { return "equal" }
func (m EvalEqualMacro) MacroSheathString() *string { return PtrString("Equal") }
func (m EvalEqualMacro) Help() string { return "Equal" }
func (m EvalEqualMacro) Doc() string {
return `Equal returns true if the sequence of values passed to it is empty or all values are equal.`
}
func (EvalEqualMacro) Invoke(span *Span, arg Arg) (returns Return, effect Effect, err error) {
series := arg.(*StructSymbol).LinkField("value", true).LiftToSeries(span)
for i := 1; i < len(series.Elem); i++ {
if !series.Elem[i-1].Equal(span, series.Elem[i]) {
return BasicFalse, nil, nil
}
}
return BasicTrue, nil, nil
}